Improvement in machines for sawing shingles



8 Sheets-Sheet 1.

'W. J. SHERBURNE. Machine for Sawing Shingles.

No 199,939. Patented Feb. 5,1878.

aZfCe-St. v hventor:

m x @M MWXM N PETERS, FHOTO-LITHOGRAPNER, WASHINGTON. D C.

3 Sheets-Sheet2.

W. J. SHERBURNE. Machine fo r SaWing'Shingles. No.ll99,939.

Patent ed Feb. 5,1878.

zw ew/ HER, WASHINGTON D C N. PETERS. PHD

3 Sheets-Sheet 3.

W. J. SHERBURNE. Machine for Sawing Shingles.

No. 199,939. I Patented Feb. 5,1878.

I i @llllllllllllllllll C] K @lllllllllllll A '...L

N. PETERS, PNOTO LITHOGRAPHER. WASHINGTON D C UNITED STATES PATENTOFFICE.

WILLIAM J. SHERBURNE, OF HASTINGS, MINNESOTA.

IMPROVEMENT IN MACHINES FOR SAWING SHINGLES.

Specification forming part of Letters Patent No. 199,939, dated February5, 1878; application filed June 15, 1877.

To all whom it may concern:

Be it known that I, WILLIAM J. SHER- BURNE, of Hastings, in the countyof Dakota and- State of Minnesota, have invented certain Improvements inShingle-Machines, of which the following is a specification:

The first part of my invention relates to the combination for moving thesash-carriage, head-block, and shingle-bolt up and down perpendicularlyby the pressure of the foot. There are two weights by which thesash-carriage and head-block arebalanced, havin g cords passing overpulleys, equally balancing the carriage and head-block. There is abrakebox fixed and pivoted on a shaft running through the center of saidbox, having pulley on the same, and driven by belt from main shaft orotherwise. Said brake-box has two rollers fixed on journals in thebrake-box, on a parallel line with the shaft on which the box ispivoted. There are two perpendicular boards or straight pitmen passingand playing up and down between the rollers and the shaft. Near thecenter of the sash-carriage there is fixed a cross-rail, to which theboards or .pitmen are'attached, so as to balance the carriage evenly inthe slides when pushed or pulled on by the board-pitmen actingsimultaneously but in opposite directions. One of the boards is fixedwith head-piece at the upper end of the board, having twofriction-rollers, through which :the opposite board runs, and having acord attached to the upper end, and passing up over a pulley, andbrought down and fastened to the center cross-rail of the sash-carriage,thus moving the carriage in an opposite direction to its motion.Theopposite one on the shaft is pivoted and attached directly to thecenter rail in the sash-carriage.

There is a perpendicular post passing up through the floor or platformupon which the foot rests, at the lower end of which it is pivoted tothe long arm of a lever extending directly under one end of thebrake-box, having a fulcrum-block attached to one of the lower rails orframe of the machine. The short arm of the lever is attached to anupright post, and is hinged to one end of the brake-box, so thatpressing down with the foot on the end of the post carries one end ofthe brake-box up, or swings it around on its fulcrum-shaft,

and thus the rollers in the brake-box press the boards againsttherevolvingshaft, and it is carried up or lowered down, as the caserequires, by a light or heavy pressure of the foot.

The second part of my invention relates to the combination of head-blockby which the shingle-block is held while being sawed. The headblock ismoved back and forward horizontally to and from the saw, and runs inslides held with ratchets and dogs in the ordinary way. On the frontedge of said block there is fixed another block in a wedge-like form, atan angle of fifteen degrees from the perpendicular line. In the face ofsaid block there are set several rows of teeth. Said teeth are made andshaped wedge-like at the points, so as to hug the shingle-block up tothe face of the head-block. Under each tooth there is an oval-shapedconcave, to prevent sawdust or chips from getting under the teeth. Thefront part of the head-block is so fixed as to run up and down inslides.

Between the front and main block there is fixed an eccentric, pivoted ona shaft protrudin g through the back part of the head-block, upon whicha lever or handle is fixed. By reversing or swinging the'lever or handlefrom left to right the front part of the head-block, in-

which the teeth are set, is pushed or driven down, and at the same time,and by the same motion, it is launched ahead, and drives the teeth intothe shingle-block one-half the depth of an ordinary shingle. The face ofthe headblock is also provided with three metallic guards sunk in,passing down and around the front head-block, and attached or fastenedto the back part of the head-block.

One end of the shingle-bolt rests against one of the end guards, havingthe edge turned up.

It forms a stop, so that the last piece left on the face of thehead-block is a perfect shingle. On the under side of the backhead-block there is fixed a metallic sliding rest, protruding out beyondthe front face of the headblock, upon which the shingle-bolt rests whilethe teeth are being inserted. On the under side of this rest there aretwo stops. As the head-block approaches the saw both of these stopsstrike against the sash-stay, and the slide is driven or moved back fromunder the shingle bolt or block.

On the under side of the back part of the head-block there are fixed twocoil-springs at tached to the rest, and so arranged that it moves thesliding rest forward or back to its place, ready to receive anothershingle-bolt when the head is slid back on the sash-carand leaves nospalt, which is the best part or heart of the shingle-bolt, to behandled over the second time and thrown into the waste or wood pile forfire-wood.

This head-block will hold any length of shingle-bolts, from ten tothirty inches long, without any alteration. It saves the time of one manin trimming the shingle-bolts, and will also hold to saw-mill cuttings,boards, planks, or slabs,'without waste.

The sash-carriage is evenly balanced with weights. The shingleboltsweigh from seventy-five to one hundred pounds each.

To show the advantage of this construction or device, if thesash-carriage, head-block, and shingle'bolt are balanced with weights,it will take the whole heft of a man to move them by and through the cutof the saw. Again, if the sash carriage alone is balanced with weights,the heft of the shin gle-bolt will crowd the cut of the saw and make badwork, and will take the whole strength of any ordinary man to lift thesash-carriage back to place again in order to saw each shingle, so thatno one man can stand the labor required to saw all day long withoutbeing relieved, while from fifteen to twenty thousand shingles'is anaverage days work for an ordinary machine.

By pressing lightly with the foot on the top of post G the shingle-boltand sash-carriage can be lowered gently down as fast as the saw willout. A little harder pressure with the foot, and the sash-carriage will'inove up, ready to out another shingle.

I have thoroughly tested the hereinafterdescribed machine.

In the accompanying drawings, Figure 1 is a front elevation of ashingle-m achine embodyin g myinvention. Fig. 2 is an end elevation ofthe same, showing the sash-carriage, head-block, shingle-bolt, and saw,and also the way in which the foot operates on the head of the post towork the brake-box, board-pitmen, and sash-carriage. Fig. 3 is a sideelevation of the sash-carriage and head-block. Fig. 4 is a plan view ofthe machine. Fig. 5 is an elevation of the brake-box, with one sidetaken off, on an enlarged scale. Fig. 6 'is a front elevation of thehead-block on an enlarged scale, showing the guards, concaves, andsliding rest. Fig. 7 is a sectional end elevation of the same, showingteeth, eccentric lever, concaves, and the end of the sliding rests. Fig.8 is a view of the sliding rest and the ways in which it moves.

E is the frame of the machine, in which the sash-carriage is hung, andslides up and down. A represents the sash-carriage, upon which thehead-block rests, together with the shinglebolt. It is slid horizontallyto and from the saw, and at the lower end of which the boards D D areattached to a cross-rail of the sash, and pass down between the shaft Kand rollers I I in brake-box B.

D D are the pitmen-boards. K is the shaft. L is the pulley, driven bybelt from main shaft. I I are the rollers. B is the brake-box ortightener. E is the connection-post. F is the lever. G is thefulcrunrpost. G is the perpendicular post, pivoted to the long arm oflever F, passing up through the floor, on the upper end of which thefoot is placed to operate the brake-box B, as shown in Fig. 2. Arepresents the shingle saw B, the shingle-block, from off which shinglesare sawed one at a time. .90 represents the guards, against which theshingle blocks or bolts are placed. S S are the teeth of head-block. T Tare the concaves under the teeth. Y is the sliding rest attached to theunder side of the head-block R by slide-piece Z, upon which theshingle-bolts rest while the teeth S are being inserted. V is theslide-plate that launches the face part of the head-block R forward. Ingoing down, WV W are the slides in which the plate V slides. 10 is theeccentric and lever that presses the face-part of the headblock down,and inserts the teeth S into the shingle-bolt. Y is the sliding rest,having a stop 011 the under side that strikes against the stay-piece O,which is attached to the top part of the sash-frame. N is a springpawl,and P the rack for gaging the shingles. set-dogs that set thehead-block.

Having described my invention and its advantages, what I claim as newis 1. The post G, brake-box. B, lever F, connection E, rollers I I,boards D D, and crossrail J, in combination with the sash-carriage A,substantially as and for the purpose here inbefore set forth.

2. The combination of the head-block R It, teeth S, concaves T, guards00, rest Y, and slide-plate V, substantially as and for the purposehereinbefore set forth.

\VILLIAM J. SHERBURNE.

Witnesses:

O. B. SPENCER, ROBERT IVHITMAN.

Q is the

